1 /*
 2  * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  *
23  */
24 
25 #include "precompiled.hpp"
26 #include "gc/shared/collectorCounters.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "memory/resourceArea.hpp"
29 #include "runtime/os.hpp"
30 
31 CollectorCounters::CollectorCounters(const char* name, int ordinal) {
32 
33   if (UsePerfData) {
34     EXCEPTION_MARK;
35     ResourceMark rm;
36 
37     const char* cns = PerfDataManager::name_space("collector", ordinal);
38 
39     _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);
40     strcpy(_name_space, cns);
41 
42     char* cname = PerfDataManager::counter_name(_name_space, "name");
43     PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
44 
45     cname = PerfDataManager::counter_name(_name_space, "invocations");
46     _invocations = PerfDataManager::create_counter(SUN_GC, cname,
47                                                    PerfData::U_Events, CHECK);
48 
49     cname = PerfDataManager::counter_name(_name_space, "time");
50     _time = PerfDataManager::create_counter(SUN_GC, cname, PerfData::U_Ticks,
51                                             CHECK);
52 
53     cname = PerfDataManager::counter_name(_name_space, "lastEntryTime");
54     _last_entry_time = PerfDataManager::create_variable(SUN_GC, cname,
55                                                         PerfData::U_Ticks,
56                                                         CHECK);
57 
58     cname = PerfDataManager::counter_name(_name_space, "lastExitTime");
59     _last_exit_time = PerfDataManager::create_variable(SUN_GC, cname,
60                                                        PerfData::U_Ticks,
61                                                        CHECK);
62   }
63 }
64 
65 CollectorCounters::~CollectorCounters() {
66   FREE_C_HEAP_ARRAY(char, _name_space);
67 }
68 
69 TraceCollectorStats::TraceCollectorStats(CollectorCounters* c) :
70     PerfTraceTimedEvent(c->time_counter(), c->invocation_counter()),
71     _c(c) {
72 
73   if (UsePerfData) {
74      _c->last_entry_counter()->set_value(os::elapsed_counter());
75   }
76 }
77 
78 TraceCollectorStats::~TraceCollectorStats() {
79   if (UsePerfData) {
80     _c->last_exit_counter()->set_value(os::elapsed_counter());
81   }
82 }